Clients often send logos as small JPGs or screenshots. To print them on signs, stickers or banners you need a vector: a file made of curves that stays sharp at any size.
Use the largest and cleanest version of the logo. Avoid photos taken at an angle and crop away anything that isn't the logo.
Upload the file to the Vectorize logo tool. The AI traces every color area into smooth curves in a few seconds, with no manual tracing.
For CorelDRAW, import SVG, EPS or PDF with File › Import. For Illustrator, open the AI or PDF file. SVG is the most universal choice for websites and cutting software.
Zoom in on small text and thin lines. If a detail merged, simplify it or retype the text with a similar font; everything else is already editable curves.